Abstract: A chair exercise device is an apparatus used enabling a user to perform resistance exercises using a chair, especially an office chair. The apparatus is also configured to collapse easily to facilitate transportation. The apparatus includes an anchoring strap, at least one securing strap, and at least one resistance band. The anchoring strap relates to a flexible connector which enables the user to join the apparatus to a leg or support of a chair. The chosen chair leg becomes the primary support against which the user pulls during exercise. The at least one securing strap is a unit utilized to connect the apparatus to the user's leg, wrist, hand, or other area before exercise. The at least one resistance band relates to a flexible elastic band, tube, or otherwise shaped mechanism capable of holding and transmitting cyclical tensile spring forces from the chosen chair leg to the user during exercise.